Sintering of nanophase oxide ceramics by using millimeter-wave radiation

被引：7

作者：

Bykov, Y

Gusev, S

Eremeev, A

Holoptsev, V

Malygin, N

Pivarunas, S

Sorokin, A

Shurov, A

机构：

[1] MICROSTRUCT INST,NIZHNII NOVGOROD,RUSSIA

[2] UNIV NIZHNY NOVGOROD,DEPT MAT SCI,NIZHNII NOVGOROD,RUSSIA

来源：

NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 5-8期

关键词：

D O I：

10.1016/0965-9773(95)00194-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sintering of nanocrystalline powder materials by microwave heating has been studied Two types of materials have been investigated: compacts of Al-2 O-3 - ZrO2 (Y-2 O-3) (average grain size 15 nm), prepared by the sol-gel method and TiO2 compacts (similar to 100 nm) produced by the blasted-wire method The kinetics of Al2O3 - ZrO2 compact densification and grain growth under microwave and conventional heating are intercompared. With microwave heating densification proceeds in two stages; the first stage is characterized by a decrease in the apparent activation energy in comparison with conventional heating If has been found that TiO2 - ceramics with densities similar to 99% of T.D. can be obtained by fast microwave heating However, because of fast sintering, the samples exhibit incomplete anatase-rutile phase transformation and rather low values of microhardness.

引用

页码：855 / 858

页数：4